ATR-P Touch

  • High-performance refractometer
  • Rugged measuring head (IP65)
  • Single or flow-through measurements
  • For permanent use in production laboratories
  • Combination with polarimeter (Purity Analyser)



The critical angle refractometer ATR-P is especially designed for applications in the sugar industry. Complete system consists of the ATR-P measuring head and the “L-Controller” electronic unit. As an alternative to the “L-Controller” electronic unit, the ATR-P measuring head can be connected to a PC or laptop. In the minimal version configuration and calibration are performed using a supplied free-software. Much more comfortable and  is the PC software “Aquisys Basic”.

Main Features:

  • High-performance robust Refractometer for the determination of mixing ratios (mass percent)
  • Quality and quantity control of liquids, especially for sucrose solutions
  • Highly accurate and reproducible measuring results in no time at all
  • Electronic unit separated from measuring head
  • Very robust and waterproof measuring head made from stainless steel
  • Operating mode alternatively in horizontal or vertical position
  • Single or flow-through measurement
  • Various sample room covers / flow through doors optionally available
  • Temperature correction of samples via external water bath – rapid temperature correction even larger sample volumes
  • Temperature compensation of Brix scale
  • Easy to calibrate with sucrose solutions
  • Measuring head can be connected to the PC and operated as stand-alone device
  • Adopted user friendly Operation System displayed by a high resolution 7″ TFT Touchscreen
  • Modern and robust design for rough environments
  • Documentation according to GLP/GMP
  • Energy saving LED light source


Main specifications

Measuring scalesRefractive Index (RI)
Sucrose (%Brix)
Customised scales
Measuring range1,32000 – 1,54000 RI / 100 % Brix
Resolution0,00001 RI / 0,01 % Brix
Precision± 0,00002 RI / ± 0,02 % Brix
Reproducibility± 0,00001 RI / ± 0,01 % Brix
Measurement modeSingle sample or flow through measurement


Ambient temperature+10 – +40 °C
Temperature measurementNTC sensor for measurement of sample temperature placed inside the prism
Temperature control sampleBy external water bath
Temperature control range+5 – +50 °C
Temperature resolution0.01 °C
Temperature precision± 0.03 °C
Temperature reproducibility± 0.02 °C
Temperature compensation Brix+5 bis +50 °C

Additional information

Light source/wavelengthLED, interference filter 589 nm
Display7″ touch screen, 800 x 480 Pixel, 16 Bit colours
OperationTouchscreen, keyboard, mouse, barcode-reader, remote via PC
Interfaces/communication2xRS232 C serial, 3xUSB (A), 1xUSB (B), 1xEthernet, easy connection of keyboard, mouse, printer, bar code reader, PC and network
Power consumption (measuring head)90 V / 50 Hz – 1,5 W
90 V / 60 Hz – 1,4 W
110 V / 50 Hz – 1,4 W
110 V / 60 Hz – 1,5 W
230 V / 50 Hz – 1,6 W
230 V / 60 Hz – 1,7 W


Standards*International Pharmacopoea, ASTM, ICUMSA and others

* Specific standard depends on application and the country it is used in. Details on request.